by jasper » 03 April 2014, 07:35
Please enter the flowsheet configuration, select the property package and hit Edit
From the Configure menu, hit compounds. Select sucrose, click Edit.
On the Constants page, please correct the charge. It should be zero.
On the Temperature Correlations page, please select Vapor Pressure (not Antoine Vapor pressure). In the Equation field, select "A" (below <None> all the way at the top). For A, enter, say, 1e10. Something high. Hit OK, OK, close. Solve.
Now, the sucrose is virtually not present in the vapor, due to its high vapor pressure.
Still you find a difference in the amount of water that vaporizes. This implies that in HYSYS you are using different fugacity models either for the vapor phase, or for the liquid phase, or both. You are using ideal gas for the vapor in TEA, and ideal activities. So beyond vapor pressure there are no more adjustable parameters to change the equilibrium, with these models. Which models are you using in HYSYS?